noun Palpus n. (pl. palpi) (Zool.) A feeler; especially, one of the jointed sense organs attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi, maxillary palpi, and labial palpi. The palpi of male spiders serve as sexual organs. Called also palp.
Collaborative International Dictionary of English 0.48
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